Ammonium Hydroxide → HCID 69601970, compound

HRID 1451857Notes

Reaction equation

HRID 1451857 reaction equation
[C:1]1(=[O:22])[N:5]([CH:6]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:7][C:8](O)=[O:9])[C:4](=[O:17])[C@H:3]2[CH2:18][CH2:19][CH2:20][CH2:21][C@@H:2]12.C(N1C=CN=C1)([N:25]1C=CN=C1)=O.[OH-].[NH4+]>O1CCCC1>[C:1]1(=[O:22])[N:5]([CH:6]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:7][C:8]([NH2:25])=[O:9])[C:4](=[O:17])[C@H:3]2[CH2:18][CH2:19][CH2:20][CH2:21][C@@H:2]12

Participants

5

Reactant 3

HCID 14923Ammonium HydroxideHCID 682631,1'-CarbonyldiimidazoleHCID 15435489HCID 15435489, compound

Product 1

HCID 69601970HCID 69601970, compoundYield 23.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 3-(cis-hexahydrophthalimido)-3-phenylpropionic acid (0.903 g, 3.00 mmol) and carbonyldiimidazole (0.525 g, 3.75 mmol) in 13 mL of anhydrous tetrahydrofuran under nitrogen was stirred for 1 hour, then 0.25 mL of concentrated ammonium hydroxide was added to the reaction solution. After 20 minutes, the reaction mixture was concentrated in vacuo to an oil. The oil was diluted with 20 mL of water and the mixture extracted with ethyl acetate (20 mL). The organic layer was dried (sodium sulfate) and concentrated to afford an oil. The oil was then purified by flash chromatography (silica gel, 5/95 methanol/methylene chloride, Rf =0.3) to afford 210 mg of 3-(cis-hexahydrophthalimido)-3-phenylpropionamide as an oil which slowly crystallized to an ivory solid: 1H NMR (DMSO-d6) δ7.49 (s, 1 H, NH), 7.4-7.2 (m, 5 H, Ar), 6.90 (s, 1 H, NH), 5.54 (t, 1 H, J=7.8 Hz, CH), 3.09 (d, 2 H, J=7.8 Hz, CH2), 2.95-2.80 (m, 2 H, CH2), 1.8-1.1 (m, 8 H); 13C NMR (DMSO-d6) δ 179.6, 179.5, 171.5, 139.5, 128.6, 127.7, 127.2, 55.2, 50.6, 38.8, 36.5, 23.4, 23.3,21.5.

Workup

  1. waitAfter 20 minutes
  2. concentrationthe reaction mixture was concentrated in vacuo to an oil
  3. additionThe oil was diluted with 20 mL of water
  4. extractionthe mixture extracted with ethyl acetate (20 mL)
  5. dry with materialThe organic layer was dried (sodium sulfate)
  6. concentrationconcentrated
  7. customto afford an oil
  8. customThe oil was then purified by flash chromatography (silica gel, 5/95 methanol/methylene chloride, Rf =0.3)

Sources & evidence

ORD record
ord-6835d5e0fcd4427a9e7e931994a8fb67
Source dataset
uspto-grants-1997_02
Patent number
US05605914

Reaction notes

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